Howdy!
HP or solid, I use the most accurate load.
These pigs were shot with rcbs 45-405, 427 grains lubed and gaschecked, 1/30 tin to lead, backed by 3,10 grammes of SP10... works great in the Browning 1886.
Last year I sold my AR, and I still had two cans of SP10 powder. I gave it a try in 45-70 as I found a load in charts.
IMO it's excellent for heavy bullets, I'm not happy with lighters for the moment, but I'm still searching.
So for pigs, it's SP10 or Swiss black powder. I don't use VV, cause I already have cans and cans of powder, for target and hunting, I'm trying to standardise....! PM me for more.